Thanks Marcus, I’ve been scouring the Rubiks cube that is the knowledge base for about a week now. I’ve also watched the Dan Baker GRCON2019 talk and followed the references there as well.
The reference you linked is very helpful in a lot of cases, but in this one it doesnt address (anywhere I’ve seen) that in order to have the device operate with local oscillator sharing between RF 0 and RF 1, physically connecting the radio back to itself needs to be done. I’ve seen plenty of things about “external LO” but to me that term is a little confusing because it sounds like it’s external LO to the device. I guess I was just thinking it might be a good idea to let N321 users know that in order to achieve phase coherence between INTERNAL channels, it’s going to be more work than a B210. Just my 2 cents. <end transmission> > On Jan 14, 2022, at 09:36, Marcus D. Leech <patchvonbr...@gmail.com> wrote: > > On 2022-01-14 01:11, Paul Atreides wrote: >> I am trying to configure the N321 to take some TX phase measurements between >> RF0 and RF1 >> I have updated the file system to the latest release using the KB guidance. >> >> My host/software side is: >> GNURadio 3.9.5 >> UHD 4.1.0.5 >> Ubuntu 20.04 >> >> My gr-uhd block has the LO settings: >> Channel 0 export = true >> Channel 0 LO = internal >> >> Channel 1 export = false >> Channel 1 LO = external >> >> On the hardware side am I understanding the LO diagram correctly that in >> order to achieve the highest phase accuracy between channels i need to share >> the LO between the transmit ports of RF0 and RF1? >> If so, would I do that by physically connecting the TX LO OUT0 (really 0-3) >> to TX LO IN1? >> >> Am I missing anything obvious for the settings and/or is there a more >> desirable way to do this? >> >> Thanks >> >> <end transmission> >> _______________________________________________ >> USRP-users mailing list -- usrp-users@lists.ettus.com >> To unsubscribe send an email to usrp-users-le...@lists.ettus.com > This KB article may be of some help: > > https://kb.ettus.com/USRP_N320/N321_LO_Distribution > > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-le...@lists.ettus.com _______________________________________________ USRP-users mailing list -- usrp-users@lists.ettus.com To unsubscribe send an email to usrp-users-le...@lists.ettus.com
